IT-E232-PC
RS232 to E1 Converter User Manual
Introduction:
IT-E232-PC interface converter supports the conversion between E1
interface which accord with the ITU-T G.703 standard and RS-232
interface, it can receive synchronous data of 2.048Mbps from E1
network, and transmit the data to ROUTER or other devices. The
mode of interface is DCE, and it can be connected with DTE or DCE
devices.
Packing List:
IT-E232-PC is shipped with following items.
1. IT-E232-PC ×1
2. 220V power line ×1
3. DB25 male to DB9 female cable ×1
4. User manual ×1
Features:
1. Convert RS232 interface to E1 (2M unframed G.703) interface
2. Support line recovery clock, local clock and equipment clock
3. Support E1 port loop
4. E1 (G.703) interface support 120ohm (RJ-45) and 75ohm (BNC
double coaxial)
Description on Installation and Panels:
1. The product front panel sketch map:
Indicator define:
PWR Power indicator. Brightness if electrify.
LOS Frame misstep alarm indicator light
AIS Upriver E1 line alarm indicator light
ERR E1 line cut alarm indicator light.
TD Receive data indicator light from G.703 network, bright as
having data receive
RD Send data indicator light from G.703 network, bright as having
data receive
2. The product back panel sketch map:
POWER 220VAC input
ON/OFF power switch
Rx/75 ohm E1-75Ω input
TX/75 ohm E1-75Ω output
RS-232 interface (input and output)
Definition of balanced Twisted Pair (120 ohm) wire
sequence for RJ45 interface and RS232 interface:
1. 120Ω/RJ45 PIN define
2. RS-232 interface define (DB25 interface)
DIP switch setup (Function setup switch SW1):
1. Impedance setup (NO.1)
OFF: 120ohm ON: 75ohm
2. BNC connect ground setup
NO.2 OFF: No connect ground
ON: Out port, connect ground
NO.3 OFF: No connect ground
ON: In port, connect ground
3. Clock setup (NO.4)
OFF internal clock
ON line, resume clock
4. Loop setup
NO.8 OFF no-loop ON E1 port loop
NO.9 OFF no-loop ON RS-232 port loop